| 摘要 |
1,030,175. Chucks. GLEASON WORKS. March 16, 1965 [April 2, 1964], No. 11088/65. Headings B3B, B3K and B3T. A chuck comprises a body 10 containing contractible means 22 to grip the cylindrical shank 24 of a workpiece W, a sleeve 47, 56 movable axially of the body and having converging guide formations 59 to engage the workpiece, and resilient means 52 acting on the sleeve to cause it to position a workpiece angularly as it is moved into the chuck. The chuck is mounted by screws 16 and a tapered hub 11. The collet 22 is actuated by a fluidpressure piston connected to a draw-bar 31. The workpieee is positioned initially between a centre 67 and a spring-pressed centre 32 in its forward position 32<SP>1</SP>, and against the forward face of a spring-pressed support 34 in its forward position 34<SP>1</SP>. The centre 67 is moved towards the chuck by an hydraulic piston. As the workpiece, which is a sector gear, is moved axially it is rotated into a particular position by the sloping edges 59. When the workpiece has been moved axially into the chuck it is positioned by lugs 43 engaging the support 34. |
